Enzymes?

From the article "Enzymes That Aid Beverages"

Q & A section:

1. List 4 functions of enzymes in beverage production.
a) Increases yields
b) Forms nutrients for the fermentation process
c) Affects the color, flavor and clarity of the finished product
d) Facilitates processing


2. Give 4 factors that will affect enzyme activity.
a) Temperature
b) Concentration
c) pH
d) Contact time with the substrate